I'm sorry I'm not being very helpful, but I have a Sony Z3v as well, its been a fantastic phone and I really can't complain, but I'm seriously considering going to a note 4 as well for the sake of features, size, and the S Pen. I would also appreciate a word from anyone who has gone from Sony to Samsung.

I actually compared Note 4 to Sony Z3 when they were just released. I ended up with Note 4 because Sony Z3 you have no guarantee that 4K video will reach 5 minutes (overheats). For Note 4 it will stop at 5 minutes and you have to press the record button again manually for another 5 minutes of 4K recording.